Seiko Cal. 3816 - 657

The Seiko 3816-657 represents an important milestone in Seiko's 1988 lineup. It features a Green dial protected by a Hardlex crystal and offers 70m of water resistance. [seikata-wm-161041489f64]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

39mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Green

Jewels

27j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1988

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